Some Basic Concepts Of Chemistry Class 11 Chemistry NCERT Chapter 1 #1 | Atharv Batch 

Time stamp👇👇 5:06 👉 what is chemistry? 7:09 👉 nature of matter 20:26 👉 classification of matter 30:02 👉 fundamental units 33:36 👉 derived units 38:48 👉 scientific notation 50:12 👉 significant figures 55:53 👉 rules for significant figures 1:07 👉 Law of chemical combination 1:10 👉 law of conservation of mass 1:18 👉 law of definite proportions Rest all laws & topics covered in the next video. I hope it will help you guys😇

Solid to liquid convert by melting, Liquid to solid convert by freezing, Solid to gas convert by sublimation, Gas to solid convert by deposition, Liquid to Gas convert by vaporization, Gas to liquid convert by condensation 14:37

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Basic concepts of chemistry, including the classification of matter into elements, compounds, and mixtures, as well as the laws of chemical combination, are discussed. Key moments: 02:11 The video discusses various branches of chemistry, including analytical, biochemistry, nuclear, and industrial chemistry, explaining basic concepts and their applications in different fields. -Analytical chemistry involves analysis techniques to understand chemical composition, while biochemistry focuses on biological molecules and processes. -Nuclear chemistry deals with nuclear reactions and their applications, while industrial chemistry relates to chemical processes in industries and pollution control. -Understanding the nature of matter, its composition, and properties is essential in chemistry education, covering topics like atoms, molecules, and chemical reactions. 09:02 Understanding the process of matter changing states from solid to liquid to gas involves heating and cooling, demonstrating the principles of melting, vaporization, and condensation. -Exploring the concept of particles in different states of matter - solid, liquid, and gas, and how they behave based on their arrangement and closeness. -Discussing the forces of attraction between particles in solids, liquids, and gases, and how heating or cooling affects the movement and arrangement of particles. -Examining the processes of melting, vaporization, and condensation, and understanding how matter transitions between different states through heating and cooling. 19:11 Understanding the classification of matter is crucial in identifying elements, compounds, and their fixed compositions, which determine their properties and behavior. -Explaining the concept of elements and compounds in matter classification. It involves identifying pure substances and mixtures, understanding their composition and properties. -Illustrating the formation of compounds through the combination of atoms. Examples include hydrogen and oxygen combining to form gases like H2 and O2. -Discussing the significance of fixed compositions in compounds. Exploring how different components like hydrogen and oxygen create distinct compounds with specific properties. 25:12 Understanding fundamental units in chemistry is crucial for calculations. Units like kilogram, meter, and Kelvin play essential roles in physical and chemical changes. -Differentiating between physical and chemical changes in chemistry. Physical changes involve altering the form of a substance without changing its chemical composition. -Explaining fundamental units in measurement systems. Understanding units like kilogram, meter, and Kelvin is essential for accurate calculations in chemistry. -Importance of understanding the concept of amount in chemistry. Knowing the amount of substances, molecules, and atoms is crucial for accurate chemical calculations. 33:16 Understanding scientific notations is crucial for simplifying complex numerical expressions. It involves representing numbers in a concise and easy-to-read format for better comprehension and calculation. -Importance of density units in physics and chemistry. Density is a fundamental concept used to describe the mass per unit volume of a substance. -Significance of scientific notation in simplifying numerical expressions. Scientific notation helps in representing large or small numbers in a more manageable form for calculations. 41:20 Understanding scientific notation is crucial for calculations involving large or small numbers. It involves expressing numbers as a coefficient multiplied by a power of 10, aiding in simplifying complex calculations. -Importance of scientific notation in simplifying calculations with large or small numbers. -Explaining the significance of positive and negative powers of 10 in scientific notation. -Demonstrating the application of scientific notation in multiplication and division to handle significant figures efficiently. 49:30 Understanding significant figures is crucial in mathematics and science to maintain accuracy in calculations and measurements. It helps in determining the precision of values and avoiding errors in scientific work. -The concept of significant figures is essential for competitive exams like UPSC and NEET, where precision in numerical values is crucial for answering questions accurately. -Significant figures play a vital role in scientific calculations, ensuring the accuracy and reliability of results in experiments and data analysis. 57:35 Understanding significant figures and decimal points is crucial in counting numbers accurately, as demonstrated in the video. -Significant figures play a key role in determining the accuracy of numerical calculations and are essential in various fields like science and engineering. -The concept of non-zero digits and their impact on counting significant figures is explained, emphasizing the importance of precision in calculations. -The video demonstrates practical examples of counting significant figures and highlights the significance of understanding decimal points for accurate numerical computations. 1:10:05 Understanding chemical reactions and mass conservation is crucial in chemistry. The concept of mass remains constant before and after a reaction, ensuring the conservation of matter. -Importance of understanding chemical reactions and mass conservation in chemistry. The mass remains constant before and after a reaction, ensuring the conservation of matter. -Explaining the concept of mass conservation in chemical reactions. The mass of substances remains unchanged before and after a reaction, highlighting the conservation of matter. -Illustrating the significance of mass conservation in chemistry through a practical example. Understanding how mass remains constant before and after a chemical reaction. 1:13:43 Understanding chemical reactions and isotopes is crucial in determining mass changes. The video discusses reactions involving glucose breakdown, carbon burning, and the concept of isotopes. -Importance of chemical reactions in converting glucose to CO2 and water. Digestion and conversion processes are explained. -Exploring the mass changes during carbon burning reactions and the conversion of carbon to carbon dioxide. The significance of balancing reactions is highlighted. -Discussion on isotopes and their impact on mass changes. The example of carbon isotopes and their role in chemical reactions is elaborated.

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🟢 Note: limitation of law of definite proportion 👉 this law is not applicable in case of isotopes Example: ¹²C + O2 👉 CO2 ¹⁴C + O2 👉 CO2 Here the mass carbon has changed hence this law is not applicable in case of isotopes.

IS THIS VIDEO SUFFICIENT AND NOT OVERKILL FOR +1 CHEMISTRY

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Condensation

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Sublimation

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Solid , liquid, Gas

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